dolby digital卡刷包:modbus（C语言程序）

modbus（C语言程序）

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杂谈

#include
#include//_nop_();
#define  OSFREQ 11059200
char TimeInterval;
char MyAddress;           
char data DI[6]={1,2,3,4,5,6};
char data DO[6]={6,7,8,9,10,11};
char data AI[6]={11,12,13,14,15,16};
char data AO[6]={16,17,18,19,20,21};   

unsigned char data ReceiveData[14];
unsigned char data  countnumber;

sbit Recenable  =P1^6;//控制端
   sbit led  =P2^7;//控制端

static unsigned char code auchCRCHi[] = {

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
                                                             
0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,

0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,

0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,

0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,

0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,

0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,

0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,

0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,

0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40

} ;

static unsigned char code auchCRCLo[] = {

0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06,

0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD,

0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,

0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A,

0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4,

0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,

0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3,

0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4,

0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,

0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29,

0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED,

0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,

0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60,

0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67,

0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,

0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68,

0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E,

0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,

0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71,

0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92,

0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,

0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B,

0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B,

0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,

0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42,

0x43, 0x83, 0x41, 0x81, 0x80, 0x40

};

unsigned int CRC16(unsigned char *puchMsg, unsigned int usDataLen)
{
  unsigned char uchCRCHi = 0xFF ;    // 高CRC字节初始化
  unsigned char uchCRCLo = 0xFF ;    // 低CRC 字节初始化
  unsigned uIndex ;                  // CRC循环中的索引
  while (usDataLen--)                // 传输消息缓冲区 
  {
    uIndex = uchCRCHi ^ *puchMsg++ ; // 计算CRC        
    uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex] ;
    uchCRCLo = auchCRCLo[uIndex] ;
  }
  return (uchCRCHi << 8 | uchCRCLo) ;
}

unsigned char getbit(unsigned int  address,unsigned char  function)
{
  unsigned char data Offset;
  unsigned char data temp;
  unsigned char data *Myaddress; 
  Offset=(char)address&0x07;
  switch (function)                 //根据功能码不同进行相应处理
  {
   case 2:
           Myaddress=DI;
           break;
   case 1:
           Myaddress=DO;            
           break;
   default:
           return 2;
  }
  temp=(char)(address>>3);
  temp=*(Myaddress+temp);
  temp>>=(Offset);
  if (temp&0x01)
    return 1;
  else
    return 0;
}

void SendData(unsigned char  *output,unsigned char  Outlength)
{ 
  ES=0;
  while(Outlength--)
  { 
    TI=0;
    ACC=*output;
    TB8=P;
    SBUF=*(output++);
    while(!TI);
    TI=0;  
  } 
  ES=1;
}

void Function12(unsigned char address,unsigned char len)
{
  unsigned int data i;
  unsigned char data j;
  unsigned char data length;
  unsigned char data *send;
  unsigned int data temp;
  unsigned char data function;
  length=0;
  send=ReceiveData;
  function=send[1];
  for (i=1;i<=len;i++)
  {
    length++;
    *(send+2+length)=0;
    for (j=0;j<8;j++)
    {
      *(send+2+length)=*(send+2+length)|getbit(address,function)<   address++;
   i++;
   if(i>len)break;
    }
    i--;
  }
  *(send+2)=length;                        //数据长度
  temp=CRC16(send,length+3);               //DI状态数据
  *(send+3+length)=(char)(temp>>8);        //CRC校验高
  *(send+4+length)=(char)temp;             //CRC校验低
  SendData(send,length+5);                 //调用A发送程序
}

void Function3(unsigned char  address,unsigned char  len)
{
  unsigned char data i;
  unsigned char data *send;
  unsigned int data temp;
  send=ReceiveData;
  *(send+2)=2*len;                         //数据长度高
  address=2*address;
  for(i=0;i                      //取输入寄存器数据
  {
    *(send+3+2*i)=AO[address++];
    *(send+4+2*i)=AO[address++];
  }
  temp=CRC16(send,2*len+3);                //CRC校验
  *(send+3+2*len)=(char)(temp>>8);
  *(send+4+2*len)=(char)temp;
  SendData(send,2*len+5);                  //调用A发送程序
}

void Function4(unsigned char  address,unsigned char  len)
{
  unsigned char data i;
  unsigned char data *send;
  unsigned int data temp;

  send=ReceiveData;
  *(send+2)=2*len;
  address=2*address;
  for(i=0;i                      //取数据
  {
    *(send+4+2*i)=AI[address++];
    *(send+3+2*i)=AI[address++];
  }
  temp=CRC16(send,2*len+3);
  *(send+3+2*len)=(char)(temp>>8);
  *(send+4+2*len)=(char)temp;
  SendData(send,2*len+5);
}

void Function6(unsigned char address)
{
  int temp;
  unsigned char data *WriteData;
  temp=2*address;
  WriteData=AO;
  //将写入的数据进行处理
  //your code to add here to deal with the write value
  *(WriteData+temp)=ReceiveData[4];
  *(WriteData+temp+1)=ReceiveData[5];
  SendData(ReceiveData,countnumber);       //调用发送程序，返回与主机相同的报文
}

void SendError(char ErrorCode)
{
  unsigned char data *send;
  unsigned int data temp;
  send=ReceiveData;
  *(send+1)=ReceiveData[1]|0x01;//最高位置1
  *(send+2)=ErrorCode;
  temp=CRC16(send,3);
  *(send+3)=(char)(temp>>8);
  *(send+4)=(char)temp;
  SendData(send,countnumber);              //调用发送程序,返回错误代码
}

void Deal()
{
  unsigned int data temp;
  unsigned char data address;
  unsigned char data length;
  unsigned char data counter;
  unsigned char data *Pointer;
  Pointer=ReceiveData;
  counter=countnumber;
  if (counter<=3 ) return;
  temp=Pointer[counter-2]<<8;  
  temp= temp|Pointer[counter-1];
  if( temp==CRC16(Pointer,counter-2))      //较验正确
  {
    address=Pointer[3];
    length=Pointer[5];
    if(address<48)
    {
      switch (Pointer[1])                  //根据功能码不同进行相应处理*/
   {
    case 1:
            Function12(address,length);
            break;
    case 2:
            Function12(address,length);
            break;
    case 3:
            address=address-1;
            Function3(address,length);
            break;
    case 4:
            address=address-1;
            Function4(address,length);
            break;
    case 6:
            address=address-1;
            Function6(address);
    default:
               SendError(0x81);
               break;
      }
    }
    else
    { SendError(0x82);}
  }
  countnumber=0;
}


void Init_timer2(unsigned int baudrate)
{
  unsigned int data TimReg2;
  T2CON = 0x00;
  T2MOD = 0x00;
  TimReg2=65536-(OSFREQ/384/baudrate*11);
  RCAP2L=TimReg2&0x00ff;
  RCAP2H=(TimReg2>8);       //RCAP2H=TimReg2/256
  RCAP2L=0;
 RCAP2H=0;
  TL2  = RCAP2L;                          //
  TH2  = RCAP2H;                          //
  TR2=1;                                  // T2CON.2 start timer 
  ET2=0;                                  // 开定时器2中断
}

void Init_SerialPort(unsigned int baudrate)
{
  unsigned char TimReg2;
  SCON = 0xd0;                            // 方式3, 8-bit UART, enable rcvr     
  TMOD = 0x21;                            // T0方式1（16位）,  T1方式2,8位重装       
  TimReg2=256-(OSFREQ/384/baudrate);
  TH1 = TimReg2;                          // 定时器1,在11.0592MHz下,波特率为9600  
  TL1 = TH1;
  TR1= 1;                                 // TR1:  定时开始                         
  //PS=1;                                 // 串行中断优先
  ES=1;                                 // 接收中断
}

main()
{ 
  EA=1;                                   //开总中断
  Init_SerialPort(9600);
  Init_timer2(9600);
  Recenable=0;                            //接收允许
  MyAddress=0x01;                         //本机地址
  while(1)
  {    
  
  }
}

void SeiralA() interrupt 4 using 0
{
  if(RI)
  {
    if((TimeInterval>2)&&(TimeInterval<=4))
    { countnumber=0;}
    if(countnumber>60)
    { countnumber=0;}                    
    ReceiveData[countnumber++]=SBUF;   //将接收到的数据到缓冲区内
    TimeInterval=0;
    RI=0;
    ET2=1;                                //当接收到数据后,将定时器2开启
  }               
}

void SerialPortTime() interrupt 5 using 0
{
  ET2=0;                                  //定时器2中断允许控制                  
  TimeInterval=TimeInterval+1;
  if((TimeInterval>4) && countnumber)
  {
    Recenable=1;           //发送
     Deal();                             //将接收到的数据进行处理
     Recenable=0;        //接收
    countnumber=0;
  }
  else
  { ET2=1;}                               //将定时器2打开
  TF2=0;          //定时器2溢出标志,软件清0
}